// -----------------------------------------------------------------------------
// <copyright file="TestCommon.cs" company="Microsoft Corporation">
//     Copyright (c) Microsoft Corporation. Licensed under the MIT License.
// </copyright>
// -----------------------------------------------------------------------------

namespace AppInstallerCLIE2ETests.Helpers
{
    using System;
    using System.Collections.Generic;
    using System.Diagnostics;
    using System.IO;
    using System.Linq;
    using System.Management.Automation;
    using System.Reflection;
    using System.Security.Principal;
    using System.Text;
    using System.Threading;
    using AppInstallerCLIE2ETests;
    using AppInstallerCLIE2ETests.PowerShell;
    using Microsoft.Management.Deployment;
    using Microsoft.Win32;
    using NUnit.Framework;

    /// <summary>
    /// Test common.
    /// </summary>
    public static class TestCommon
    {
        /// <summary>
        /// Scope.
        /// </summary>
        public enum Scope
        {
            /// <summary>
            /// None.
            /// </summary>
            Unknown,

            /// <summary>
            /// User.
            /// </summary>
            User,

            /// <summary>
            /// Machine.
            /// </summary>
            Machine,
        }

        /// <summary>
        /// The type of location.
        /// </summary>
        public enum TestModuleLocation
        {
            /// <summary>
            /// Current user.
            /// </summary>
            CurrentUser,

            /// <summary>
            /// All users.
            /// </summary>
            AllUsers,

            /// <summary>
            /// Winget module path.
            /// </summary>
            WinGetModulePath,

            /// <summary>
            /// Custom.
            /// </summary>
            Custom,

            /// <summary>
            /// Default winget configure.
            /// </summary>
            Default,
        }

        /// <summary>
        /// Gets a value indicating whether the current assembly is executing in an administrative context.
        /// </summary>
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Interoperability", "CA1416:Validate platform compatibility", Justification = "Windows only API")]
        public static bool ExecutingAsAdministrator
        {
            get
            {
                WindowsIdentity identity = WindowsIdentity.GetCurrent();
                WindowsPrincipal principal = new (identity);
                return principal.IsInRole(WindowsBuiltInRole.Administrator);
            }
        }

        /// <summary>
        /// Gets a value indicating whether the test is running in the CI build.
        /// </summary>
        public static bool IsCIEnvironment
        {
            get
            {
                return Environment.GetEnvironmentVariable("BUILD_BUILDNUMBER") != null;
            }
        }

        /// <summary>
        /// Run winget command.
        /// </summary>
        /// <param name="command">Command to run.</param>
        /// <param name="parameters">Parameters.</param>
        /// <param name="stdIn">Optional std in.</param>
        /// <param name="timeOut">Optional timeout.</param>
        /// <param name="throwOnTimeout">Throw on timeout.</param>
        /// <returns>The result of the command.</returns>
        public static RunCommandResult RunAICLICommand(string command, string parameters, string stdIn = null, int timeOut = 60000, bool throwOnTimeout = true)
        {
            string correlationParameter = " --correlation " + Guid.NewGuid().ToString();

            // Don't include correlation when the call has an option ending `--` value.
            foreach (string part in parameters.Split(' ', StringSplitOptions.TrimEntries))
            {
                if (part == "--")
                {
                    correlationParameter = string.Empty;
                }
            }

            string inputMsg =
                    "AICLI path: " + TestSetup.Parameters.AICLIPath +
                    " Command: " + command +
                    " Parameters: " + parameters + correlationParameter +
                    (string.IsNullOrEmpty(stdIn) ? string.Empty : " StdIn: " + stdIn) +
                    " Timeout: " + timeOut;

            TestContext.Out.WriteLine($"Starting command run. {inputMsg}");

            return RunAICLICommandViaDirectProcess(command, parameters + correlationParameter, stdIn, timeOut, throwOnTimeout);
        }

        /// <summary>
        /// Run command.
        /// </summary>
        /// <param name="fileName">File name.</param>
        /// <param name="args">Args.</param>
        /// <param name="timeOut">Time out.</param>
        /// <param name="throwOnFailure">If true, throw instead of returning false on a failure.</param>
        /// <returns>True if exit code is 0.</returns>
        public static bool RunCommand(string fileName, string args = "", int timeOut = 60000, bool throwOnFailure = false)
        {
            RunCommandResult result = RunCommandWithResult(fileName, args, timeOut);

            if (result.ExitCode != 0)
            {
                TestContext.Out.WriteLine($"Command failed with: {result.ExitCode}");
                if (throwOnFailure)
                {
                    throw new RunCommandException(fileName, args, result);
                }

                return false;
            }
            else
            {
                return true;
            }
        }

        /// <summary>
        /// Run command with result.
        /// </summary>
        /// <param name="fileName">File name.</param>
        /// <param name="args">Args.</param>
        /// <param name="timeOut">Optional timeout.</param>
        /// <returns>Command result.</returns>
        public static RunCommandResult RunCommandWithResult(string fileName, string args, int timeOut = 60000)
        {
            TestContext.Out.WriteLine($"Running command: {fileName} {args}");

            Process p = new Process();
            p.StartInfo = new ProcessStartInfo(fileName, args);
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.RedirectStandardError = true;
            p.Start();

            RunCommandResult result = new ();
            if (p.WaitForExit(timeOut))
            {
                result.ExitCode = p.ExitCode;
                result.StdOut = p.StandardOutput.ReadToEnd();
                result.StdErr = p.StandardError.ReadToEnd();

                if (TestSetup.Parameters.VerboseLogging)
                {
                    TestContext.Out.WriteLine($"Command run finished. {fileName} {args} {timeOut}. Output: {result.StdOut} Error: {result.StdErr}");
                }
            }
            else
            {
                throw new TimeoutException($"Command run timed out. {fileName} {args} {timeOut}");
            }

            return result;
        }

        /// <summary>
        /// Get test file path.
        /// </summary>
        /// <param name="fileName">Test file name.</param>
        /// <returns>Path of test file.</returns>
        public static string GetTestFile(string fileName)
        {
            return Path.Combine(TestContext.CurrentContext.TestDirectory, fileName);
        }

        /// <summary>
        /// Get test data file path.
        /// </summary>
        /// <param name="fileName">File name.</param>
        /// <returns>Test file data path.</returns>
        public static string GetTestDataFile(string fileName)
        {
            return GetTestFile(Path.Combine("TestData", fileName));
        }

        /// <summary>
        /// Get test work directory. Creates if not exists.
        /// </summary>
        /// <returns>The work directory.</returns>
        public static string GetTestWorkDir()
        {
            string workDir = Path.Combine(TestContext.CurrentContext.TestDirectory, "WorkDirectory");
            Directory.CreateDirectory(workDir);
            return workDir;
        }

        /// <summary>
        /// Create random test directory.
        /// </summary>
        /// <returns>Path of new test directory.</returns>
        public static string GetRandomTestDir()
        {
            string randDir = Path.Combine(GetTestWorkDir(), Path.GetRandomFileName());
            Directory.CreateDirectory(randDir);
            return randDir;
        }

        /// <summary>
        /// Creates new random file name. File is not created.
        /// </summary>
        /// <param name="extension">Extension of random file.</param>
        /// <returns>Path of random file.</returns>
        public static string GetRandomTestFile(string extension)
        {
            return Path.Combine(GetTestWorkDir(), Path.GetRandomFileName() + extension);
        }

        /// <summary>
        /// Install msix package via PowerShell.
        /// </summary>
        /// <param name="file">Msix file.</param>
        /// <returns>True if installed.</returns>
        public static bool InstallMsix(string file)
        {
            return RunCommand("powershell", $"Add-AppxPackage \"{file}\"", throwOnFailure: true);
        }

        /// <summary>
        /// Install and register msix package via appx manifest.
        /// </summary>
        /// <param name="packagePath">Path to package.</param>
        /// <param name="forceShutdown">Force shutdown.</param>
        /// <param name="throwOnFailure">Throw on failure.</param>
        /// <returns>True if installed correctly.</returns>
        public static bool InstallMsixRegister(string packagePath, bool forceShutdown = false, bool throwOnFailure = true)
        {
            string manifestFile = Path.Combine(packagePath, "AppxManifest.xml");

            var command = $"Add-AppxPackage -Register \"{manifestFile}\"";
            if (forceShutdown)
            {
                command += " -ForceTargetApplicationShutdown";
            }

            return RunCommand("powershell", command, throwOnFailure: throwOnFailure);
        }

        /// <summary>
        /// Remove msix package.
        /// </summary>
        /// <param name="name">Package to remove.</param>
        /// <param name="isProvisioned">Whether the package is provisioned.</param>
        /// <returns>True if removed correctly.</returns>
        public static bool RemoveMsix(string name, bool isProvisioned = false)
        {
            if (isProvisioned)
            {
                return RunCommand("powershell", $"Get-AppxProvisionedPackage -Online | Where-Object {{$_.PackageName -like \"*{name}*\"}} | Remove-AppxProvisionedPackage -Online -AllUsers") &&
                    RunCommand("powershell", $"Get-AppxPackage \"{name}\" | Remove-AppxPackage -AllUsers");
            }
            else
            {
                return RunCommand("powershell", $"Get-AppxPackage \"{name}\" | Remove-AppxPackage");
            }
        }

        /// <summary>
        /// Gets the portable symlink directory.
        /// </summary>
        /// <param name="scope">Scope.</param>
        /// <returns>The path of the symlinks.</returns>
        public static string GetPortableSymlinkDirectory(Scope scope)
        {
            if (scope == Scope.User)
            {
                return Path.Combine(Environment.GetEnvironmentVariable("LocalAppData"), "Microsoft", "WinGet", "Links");
            }
            else
            {
                return Path.Combine(Environment.GetEnvironmentVariable("ProgramFiles"), "WinGet", "Links");
            }
        }

        /// <summary>
        /// Gets the portable package directory.
        /// </summary>
        /// <returns>The portable package directory.</returns>
        public static string GetPortablePackagesDirectory()
        {
            return Path.Combine(Environment.GetEnvironmentVariable("LocalAppData"), "Microsoft", "WinGet", "Packages");
        }

        /// <summary>
        /// Gets the default download directory for the download command.
        /// </summary>
        /// <returns>The default download directory.</returns>
        public static string GetDefaultDownloadDirectory()
        {
            return Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Downloads");
        }

        /// <summary>
        /// Gets the checkpoints directory based on whether the command is invoked in desktop package or not.
        /// </summary>
        /// <returns>The default checkpoints directory.</returns>
        public static string GetCheckpointsDirectory()
        {
            if (TestSetup.Parameters.PackagedContext)
            {
                return Path.Combine(Environment.GetEnvironmentVariable("LocalAppData"), Constants.CheckpointDirectoryPackaged);
            }
            else
            {
                return Path.Combine(Environment.GetEnvironmentVariable("LocalAppData"), Constants.CheckpointDirectoryUnpackaged);
            }
        }

        /// <summary>
        /// Verify portable package.
        /// </summary>
        /// <param name="installDir">Install dir.</param>
        /// <param name="commandAlias">Command alias.</param>
        /// <param name="filename">File name.</param>
        /// <param name="productCode">Product code.</param>
        /// <param name="shouldExist">Should exists.</param>
        /// <param name="scope">Scope.</param>
        /// <param name="installDirectoryAddedToPath">Install directory added to path instead of the symlink directory.</param>
        public static void VerifyPortablePackage(
            string installDir,
            string commandAlias,
            string filename,
            string productCode,
            bool shouldExist,
            Scope scope = Scope.User,
            bool installDirectoryAddedToPath = false)
        {
            // When portables are installed, if the exe path is inside a directory it will not be aliased
            // if the exe path is at the root level, it will be aliased. Therefore, if either exist, the exe exists
            string exePath = Path.Combine(installDir, filename);
            string exeAliasedPath = Path.Combine(installDir, commandAlias);
            bool exeExists = File.Exists(exePath) || File.Exists(exeAliasedPath);

            string symlinkDirectory = GetPortableSymlinkDirectory(scope);
            string symlinkPath = Path.Combine(symlinkDirectory, commandAlias);
            bool symlinkExists = File.Exists(symlinkPath);

            bool portableEntryExists;
            RegistryKey baseKey = scope == Scope.User ? Registry.CurrentUser : Registry.LocalMachine;
            string uninstallSubKey = Constants.UninstallSubKey;
            using (RegistryKey uninstallRegistryKey = baseKey.OpenSubKey(uninstallSubKey, true))
            {
                RegistryKey portableEntry = uninstallRegistryKey.OpenSubKey(productCode, true);
                portableEntryExists = portableEntry != null;
            }

            bool isAddedToPath;
            string pathSubKey = scope == Scope.User ? Constants.PathSubKey_User : Constants.PathSubKey_Machine;
            using (RegistryKey environmentRegistryKey = baseKey.OpenSubKey(pathSubKey, true))
            {
                string pathName = "Path";
                var currentPathValue = (string)environmentRegistryKey.GetValue(pathName);
                var portablePathValue = (installDirectoryAddedToPath ? installDir : symlinkDirectory) + ';';
                isAddedToPath = currentPathValue.Contains(portablePathValue);
            }

            // Always clean up as best effort.
            RunAICLICommand("uninstall", $"--product-code {productCode} --force");

            Assert.AreEqual(shouldExist, exeExists, $"Expected portable exe path: {exePath}");
            Assert.AreEqual(shouldExist && !installDirectoryAddedToPath, symlinkExists, $"Expected portable symlink path: {symlinkPath}");
            Assert.AreEqual(shouldExist, portableEntryExists, $"Expected {productCode} subkey in path: {uninstallSubKey}");
            Assert.AreEqual(shouldExist, isAddedToPath, $"Expected path variable: {(installDirectoryAddedToPath ? installDir : symlinkDirectory)}");
        }

        /// <summary>
        /// Copies log files to the path %TEMP%\E2ETestLogs.
        /// </summary>
        public static void PublishE2ETestLogs()
        {
            string tempPath = Path.GetTempPath();
            string localAppDataPath = Environment.GetEnvironmentVariable("LocalAppData");
            string testLogsPackagedSourcePath = Path.Combine(localAppDataPath, Constants.E2ETestLogsPathPackaged);
            string testLogsUnpackagedSourcePath = Path.Combine(tempPath, Constants.E2ETestLogsPathUnpackaged);
            string testLogsDestPath = Path.Combine(tempPath, "E2ETestLogs");
            string testLogsPackagedDestPath = Path.Combine(testLogsDestPath, "Packaged");
            string testLogsUnpackagedDestPath = Path.Combine(testLogsDestPath, "Unpackaged");

            if (Directory.Exists(testLogsPackagedSourcePath))
            {
                CopyDirectory(testLogsPackagedSourcePath, testLogsPackagedDestPath);
            }

            if (Directory.Exists(testLogsUnpackagedSourcePath))
            {
                CopyDirectory(testLogsUnpackagedSourcePath, testLogsUnpackagedDestPath);
            }
        }

        /// <summary>
        /// Gets the server certificate as a hex string.
        /// </summary>
        /// <returns>Hex string.</returns>
        public static string GetTestServerCertificateHexString()
        {
            if (string.IsNullOrEmpty(TestSetup.Parameters.LocalServerCertPath))
            {
                throw new Exception($"{Constants.LocalServerCertPathParameter} not set.");
            }

            if (!File.Exists(TestSetup.Parameters.LocalServerCertPath))
            {
                throw new FileNotFoundException(TestSetup.Parameters.LocalServerCertPath);
            }

            return Convert.ToHexString(File.ReadAllBytes(TestSetup.Parameters.LocalServerCertPath));
        }

        /// <summary>
        /// Verify exe installer correctly.
        /// </summary>
        /// <param name="installDir">Install directory.</param>
        /// <param name="expectedContent">Optional expected content.</param>
        /// <returns>True if success.</returns>
        public static bool VerifyTestExeInstalled(string installDir, string expectedContent = null)
        {
            bool verifyInstallSuccess = true;

            if (!File.Exists(Path.Combine(installDir, Constants.TestExeInstalledFileName)))
            {
                TestContext.Out.WriteLine($"TestExeInstalled.exe not found at {installDir}");
                verifyInstallSuccess = false;
            }

            if (verifyInstallSuccess && !string.IsNullOrEmpty(expectedContent))
            {
                string content = File.ReadAllText(Path.Combine(installDir, Constants.TestExeInstalledFileName));
                TestContext.Out.WriteLine($"TestExeInstalled.exe content: {content}");
                verifyInstallSuccess = content.Contains(expectedContent);
            }

            return verifyInstallSuccess;
        }

        /// <summary>
        /// Verifies if the repair of the test executable was successful.
        /// </summary>
        /// <param name="installDir">The directory where the test executable is installed.</param>
        /// <param name="expectedContent">The expected content in the test executable file. This is optional.</param>
        /// <returns>Returns true if the repair was successful, false otherwise.</returns>
        public static bool VerifyTestExeRepairSuccessful(string installDir, string expectedContent = null)
        {
            bool verifyRepairSuccess = true;

            if (!File.Exists(Path.Combine(installDir, Constants.TestExeRepairCompletedFileName)))
            {
                TestContext.Out.WriteLine($"{Constants.TestExeRepairCompletedFileName} not found at {installDir}");
                verifyRepairSuccess = false;
            }

            if (verifyRepairSuccess && !string.IsNullOrEmpty(expectedContent))
            {
                string content = File.ReadAllText(Path.Combine(installDir, Constants.TestExeRepairCompletedFileName));
                TestContext.Out.WriteLine($"TestExeRepairCompleted.txt content: {content}");
                verifyRepairSuccess = content.Contains(expectedContent);
            }

            return verifyRepairSuccess;
        }

        /// <summary>
        /// Assert installer and manifest downloaded correctly and cleanup.
        /// </summary>
        /// <param name="downloadDir">Download directory.</param>
        /// <param name="name">Package name.</param>
        /// <param name="version">Package version.</param>
        /// <param name="arch">Installer architecture.</param>
        /// <param name="scope">Installer scope.</param>
        /// <param name="installerType">Installer type.</param>
        /// <param name="locale">Installer locale.</param>
        /// <param name="isArchive">Boolean value indicating whether the installer is an archive.</param>
        /// <param name="cleanup">Boolean value indicating whether to remove the installer file and directory.</param>
        public static void AssertInstallerDownload(
            string downloadDir,
            string name,
            string version,
            Windows.System.ProcessorArchitecture arch,
            Scope scope,
            PackageInstallerType installerType,
            string locale = null,
            bool isArchive = false,
            bool cleanup = true)
        {
            string expectedFileName = $"{name}_{version}";

            if (scope != Scope.Unknown)
            {
                expectedFileName += $"_{scope}";
            }

            expectedFileName += $"_{arch}_{installerType}";

            if (!string.IsNullOrEmpty(locale))
            {
                expectedFileName += $"_{locale}";
            }

            string installerExtension;
            if (isArchive)
            {
                installerExtension = ".zip";
            }
            else
            {
                installerExtension = installerType switch
                {
                    PackageInstallerType.Msi => ".msi",
                    PackageInstallerType.Msix => ".msix",
                    _ => ".exe"
                };
            }

            string installerDownloadPath = Path.Combine(downloadDir, expectedFileName + installerExtension);
            string manifestDownloadPath = Path.Combine(downloadDir, expectedFileName + ".yaml");

            Assert.IsTrue(Directory.Exists(downloadDir), $"Download directory does not exist: {downloadDir}");
            Assert.IsTrue(File.Exists(installerDownloadPath), $"Installer file does not exist: {installerDownloadPath}");
            Assert.IsTrue(File.Exists(manifestDownloadPath), $"Manifest file does not exist: {manifestDownloadPath}");

            if (cleanup)
            {
                Directory.Delete(downloadDir, true);
            }
        }

        /// <summary>
        /// Best effort test exe cleanup.
        /// </summary>
        /// <param name="installDir">Install directory.</param>
        public static void BestEffortTestExeCleanup(string installDir)
        {
            var uninstallerPath = Path.Combine(installDir, Constants.TestExeUninstallerFileName);
            if (File.Exists(uninstallerPath))
            {
                RunCommand(Path.Combine(installDir, Constants.TestExeUninstallerFileName));
            }
        }

        /// <summary>
        /// Best effort test exe cleanup and install directory cleanup.
        /// </summary>
        /// <param name="installDir">Install directory.</param>
        public static void CleanupTestExeAndDirectory(string installDir)
        {
            // Always try clean up and ignore clean up failure
            BestEffortTestExeCleanup(installDir);

            // Delete the install directory to reclaim disk space
            if (Directory.Exists(installDir))
            {
                Directory.Delete(installDir, true);
            }
        }

        /// <summary>
        /// Verify exe installer correctly and then uninstall it.
        /// </summary>
        /// <param name="installDir">Install directory.</param>
        /// <param name="expectedContent">Optional expected content.</param>
        /// <returns>True if success.</returns>
        public static bool VerifyTestExeInstalledAndCleanup(string installDir, string expectedContent = null)
        {
            bool verifyInstallSuccess = VerifyTestExeInstalled(installDir, expectedContent);

            // Always try clean up and ignore clean up failure
            BestEffortTestExeCleanup(installDir);

            return verifyInstallSuccess;
        }

        /// <summary>
        /// Verify exe repair completed and cleanup.
        /// </summary>
        /// <param name="installDir">Install directory.</param>
        /// <param name="expectedContent">Optional expected context.</param>
        /// <returns>True if success.</returns>
        public static bool VerifyTestExeRepairCompletedAndCleanup(string installDir, string expectedContent = null)
        {
            bool verifyRepairSuccess = VerifyTestExeRepairSuccessful(installDir, expectedContent);
            CleanupTestExeAndDirectory(installDir);

            return verifyRepairSuccess;
        }

        /// <summary>
        /// Verify msi installed correctly.
        /// </summary>
        /// <param name="installDir">Installed directory.</param>
        /// <returns>True if success.</returns>
        public static bool VerifyTestMsiInstalledAndCleanup(string installDir)
        {
            string pathToCheck = Path.Combine(installDir, Constants.AppInstallerTestExeInstallerExe);
            if (!File.Exists(pathToCheck))
            {
                TestContext.Out.WriteLine($"File not found: {pathToCheck}");
                return false;
            }

            return RunCommand("msiexec.exe", $"/qn /x {Constants.MsiInstallerProductCode}");
        }

        /// <summary>
        /// Verify msix installed correctly.
        /// </summary>
        /// <param name="isProvisioned">Whether the package is provisioned.</param>
        /// <returns>True if success.</returns>
        public static bool VerifyTestMsixInstalledAndCleanup(bool isProvisioned = false)
        {
            var result = RunCommandWithResult("powershell", $"Get-AppxPackage {Constants.MsixInstallerName}");

            if (!result.StdOut.Contains(Constants.MsixInstallerName))
            {
                return false;
            }

            if (isProvisioned)
            {
                result = RunCommandWithResult("powershell", $"Get-AppxProvisionedPackage -Online | Where-Object {{$_.PackageName -like \"*{Constants.MsixInstallerName}*\"}}");
                if (!result.StdOut.Contains(Constants.MsixInstallerName))
                {
                    return false;
                }
            }

            return RemoveMsix(Constants.MsixInstallerName, isProvisioned);
        }

        /// <summary>
        /// Verify test exe uninstalled.
        /// </summary>
        /// <param name="installDir">Installed directory.</param>
        /// <returns>True if success.</returns>
        public static bool VerifyTestExeUninstalled(string installDir)
        {
            return File.Exists(Path.Combine(installDir, Constants.TestExeUninstalledFileName));
        }

        /// <summary>
        /// Verify msi uninstalled.
        /// </summary>
        /// <param name="installDir">Install directory.</param>
        /// <returns>True if success.</returns>
        public static bool VerifyTestMsiUninstalled(string installDir)
        {
            return !File.Exists(Path.Combine(installDir, Constants.AppInstallerTestExeInstallerExe));
        }

        /// <summary>
        /// Verify msix uninstalled.
        /// </summary>
        /// <param name="isProvisioned">Whether the package is provisioned.</param>
        /// <returns>True if success.</returns>
        public static bool VerifyTestMsixUninstalled(bool isProvisioned = false)
        {
            bool isUninstalled = false;
            var result = RunCommandWithResult("powershell", $"Get-AppxPackage {Constants.MsixInstallerName}");
            isUninstalled = string.IsNullOrWhiteSpace(result.StdOut);

            if (isProvisioned)
            {
                result = RunCommandWithResult("powershell", $"Get-AppxProvisionedPackage -Online | Where-Object {{$_.PackageName -like \"*{Constants.MsixInstallerName}*\"}}");
                isUninstalled = isUninstalled && string.IsNullOrWhiteSpace(result.StdOut);
            }

            return isUninstalled;
        }

        /// <summary>
        /// Modify uninstalled registry key.
        /// </summary>
        /// <param name="productCode">Product code.</param>
        /// <param name="name">Name.</param>
        /// <param name="value">Value.</param>
        public static void ModifyPortableARPEntryValue(string productCode, string name, string value)
        {
            using (RegistryKey uninstallRegistryKey = Registry.CurrentUser.OpenSubKey(Constants.UninstallSubKey, true))
            {
                RegistryKey entry = uninstallRegistryKey.OpenSubKey(productCode, true);
                entry.SetValue(name, value);
            }
        }

        /// <summary>
        /// Set up test source.
        /// </summary>
        /// <param name="useGroupPolicyForTestSource">Use group policy.</param>
        public static void SetupTestSource(bool useGroupPolicyForTestSource = false)
        {
            // Remove the test source so that its package is also removed.
            RunAICLICommand("source remove", Constants.TestSourceName);

            RunAICLICommand("source reset", "--force");
            RunAICLICommand("source remove", Constants.DefaultWingetSourceName);
            RunAICLICommand("source remove", Constants.DefaultMSStoreSourceName);

            // TODO: If/when cert pinning is implemented on the packaged index source, useGroupPolicyForTestSource should be set to default true
            //       to enable testing it by default.  Until then, leaving this here...
            if (useGroupPolicyForTestSource)
            {
                GroupPolicyHelper.EnableAdditionalSources.SetEnabledList(new GroupPolicyHelper.GroupPolicySource[]
                {
                    new GroupPolicyHelper.GroupPolicySource
                    {
                        Name = Constants.TestSourceName,
                        Arg = Constants.TestSourceUrl,
                        Type = Constants.TestSourceType,
                        Data = Constants.TestSourceIdentifier,
                        Identifier = Constants.TestSourceIdentifier,
                        CertificatePinning = new GroupPolicyHelper.GroupPolicyCertificatePinning
                        {
                            Chains = new GroupPolicyHelper.GroupPolicyCertificatePinningChain[]
                            {
                                new GroupPolicyHelper.GroupPolicyCertificatePinningChain
                                {
                                    Chain = new GroupPolicyHelper.GroupPolicyCertificatePinningDetails[]
                                    {
                                        new GroupPolicyHelper.GroupPolicyCertificatePinningDetails
                                        {
                                            Validation = new string[] { "publickey" },
                                            EmbeddedCertificate = GetTestServerCertificateHexString(),
                                        },
                                    },
                                },
                            },
                        },
                        TrustLevel = new string[] { "None" },
                        Explicit = false,
                    },
                });
            }
            else
            {
                GroupPolicyHelper.EnableAdditionalSources.SetNotConfigured();
                RunAICLICommand("source add", $"{Constants.TestSourceName} {Constants.TestSourceUrl} --trust-level trusted");
            }

            Thread.Sleep(2000);
        }

        /// <summary>
        /// Tear down test source.
        /// </summary>
        public static void TearDownTestSource()
        {
            RunAICLICommand("source remove", Constants.TestSourceName);
            RunAICLICommand("source reset", "--force");
        }

        /// <summary>
        /// Ensures that a module is in the desired state.
        /// </summary>
        /// <param name="moduleName">The module.</param>
        /// <param name="present">Whether the module is present or not.</param>
        /// <param name="repository">The repository to get the module from if needed.</param>
        /// <param name="location">The location to install the module.</param>
        public static void EnsureModuleState(string moduleName, bool present, string repository = null, TestCommon.TestModuleLocation location = TestModuleLocation.CurrentUser)
        {
            string wingetModulePath = TestCommon.GetExpectedModulePath(TestModuleLocation.WinGetModulePath);
            string customPath = TestCommon.GetExpectedModulePath(TestModuleLocation.Custom);

            ICollection<PSModuleInfo> e2eModule;
            bool isPresent = false;
            {
                using var pwsh = new PowerShellHost();
                pwsh.AddModulePath($"{wingetModulePath};{customPath}");

                e2eModule = pwsh.PowerShell.AddCommand("Get-Module").AddParameter("Name", moduleName).AddParameter("ListAvailable").Invoke<PSModuleInfo>();
                isPresent = e2eModule.Any();
            }

            TestContext.Out.WriteLine($"EnsureModuleState: {moduleName}[present:{present}] => isPresent:{isPresent}");

            if (isPresent)
            {
                // If the module was saved in a different location we can't Uninstall-Module.
                foreach (var module in e2eModule)
                {
                    var moduleBase = module.Path;
                    while (Path.GetFileName(moduleBase) != moduleName)
                    {
                        moduleBase = Path.GetDirectoryName(moduleBase);
                    }

                    if (!present)
                    {
                        TestContext.Out.WriteLine($"EnsureModuleState: Removing {moduleName} to match present=false");
                        Directory.Delete(moduleBase, true);
                    }
                    else
                    {
                        // Must be present in the right location.
                        var expectedLocation = TestCommon.GetExpectedModulePath(location);
                        if (!moduleBase.StartsWith(expectedLocation))
                        {
                            TestContext.Out.WriteLine($"EnsureModuleState: Removing {moduleName} as it is not in the correct location");
                            Directory.Delete(moduleBase, true);
                            isPresent = false;
                        }
                    }
                }
            }

            if (!isPresent && present)
            {
                if (location == TestModuleLocation.CurrentUser ||
                    location == TestModuleLocation.AllUsers)
                {
                    using var pwsh = new PowerShellHost();
                    pwsh.AddModulePath($"{wingetModulePath};{customPath}");
                    pwsh.PowerShell.AddCommand("Install-Module").AddParameter("Name", moduleName).AddParameter("Force");

                    if (!string.IsNullOrEmpty(repository))
                    {
                        pwsh.PowerShell.AddParameter("Repository", repository);
                    }

                    if (location == TestModuleLocation.CurrentUser)
                    {
                        pwsh.PowerShell.AddParameter("Scope", "CurrentUser");
                    }
                    else if (location == TestModuleLocation.AllUsers)
                    {
                        pwsh.PowerShell.AddParameter("Scope", "AllUsers");
                    }

                    TestContext.Out.WriteLine($"EnsureModuleState: Installing module {moduleName} to {location}");
                    _ = pwsh.PowerShell.Invoke();
                }
                else
                {
                    string path = customPath;
                    if (location == TestModuleLocation.WinGetModulePath ||
                        location == TestModuleLocation.Default)
                    {
                        path = wingetModulePath;
                    }

                    using var pwsh = new PowerShellHost();
                    pwsh.AddModulePath($"{wingetModulePath};{customPath}");
                    pwsh.PowerShell.AddCommand("Save-Module").AddParameter("Name", moduleName).AddParameter("Path", path).AddParameter("Force");

                    if (!string.IsNullOrEmpty(repository))
                    {
                        pwsh.PowerShell.AddParameter("Repository", repository);
                    }

                    TestContext.Out.WriteLine($"EnsureModuleState: Saving module {moduleName} to {path}");
                    _ = pwsh.PowerShell.Invoke();
                }
            }
        }

        /// <summary>
        /// Creates an ARP entry from the given values.
        /// </summary>
        /// <param name="productCode">Product code of the entry.</param>
        /// <param name="properties">The properties to set in the entry.</param>
        /// <param name="scope">Scope of the entry.</param>
        public static void CreateARPEntry(
            string productCode,
            object properties,
            Scope scope = Scope.User)
        {
            RegistryKey baseKey = scope == Scope.User ? Registry.CurrentUser : Registry.LocalMachine;
            using (RegistryKey uninstallRegistryKey = baseKey.OpenSubKey(Constants.UninstallSubKey, true))
            {
                RegistryKey entry = uninstallRegistryKey.CreateSubKey(productCode, true);

                foreach (PropertyInfo property in properties.GetType().GetProperties())
                {
                    entry.SetValue(property.Name, property.GetValue(properties));
                }
            }
        }

        /// <summary>
        /// Removes an ARP entry.
        /// </summary>
        /// <param name="productCode">Product code of the entry.</param>
        /// <param name="scope">Scope of the entry.</param>
        public static void RemoveARPEntry(
            string productCode,
            Scope scope = Scope.User)
        {
            RegistryKey baseKey = scope == Scope.User ? Registry.CurrentUser : Registry.LocalMachine;
            using (RegistryKey uninstallRegistryKey = baseKey.OpenSubKey(Constants.UninstallSubKey, true))
            {
                uninstallRegistryKey.DeleteSubKey(productCode);
            }
        }

        /// <summary>
        /// Copies the contents of a given directory from a source path to a destination path.
        /// </summary>
        /// <param name="sourceDirName">Source directory name.</param>
        /// <param name="destDirName">Destination directory name.</param>
        public static void CopyDirectory(string sourceDirName, string destDirName)
        {
            DirectoryInfo dir = new DirectoryInfo(sourceDirName);
            DirectoryInfo[] dirs = dir.GetDirectories();

            if (!Directory.Exists(destDirName))
            {
                Directory.CreateDirectory(destDirName);
            }

            FileInfo[] files = dir.GetFiles();
            foreach (FileInfo file in files)
            {
                string temppath = Path.Combine(destDirName, file.Name);
                file.CopyTo(temppath, false);
            }

            foreach (DirectoryInfo subdir in dirs)
            {
                string temppath = Path.Combine(destDirName, subdir.Name);
                CopyDirectory(subdir.FullName, temppath);
            }
        }

        /// <summary>
        /// Gets the expected module path.
        /// </summary>
        /// <param name="location">Location.</param>
        /// <returns>The expected path of the module.</returns>
        public static string GetExpectedModulePath(TestModuleLocation location)
        {
            switch (location)
            {
                case TestModuleLocation.CurrentUser:
                    return Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), @"PowerShell\Modules");
                case TestModuleLocation.AllUsers:
                    return Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), @"PowerShell\Modules");
                case TestModuleLocation.WinGetModulePath:
                case TestModuleLocation.Default:
                    return Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"Microsoft\WinGet\Configuration\Modules");
                case TestModuleLocation.Custom:
                    return Path.Combine(Path.GetTempPath(), "E2ECustomModules");
                default:
                    throw new ArgumentException(location.ToString());
            }
        }

        /// <summary>
        /// Gets the instance identifier of the first configuration history item with name in its output line.
        /// </summary>
        /// <param name="name">The string to search for.</param>
        /// <returns>The instance identifier of a configuration that matched the search, or an empty string if none did.</returns>
        public static string GetConfigurationInstanceIdentifierFor(string name)
        {
            var result = TestCommon.RunAICLICommand("configure list", string.Empty);
            Assert.AreEqual(0, result.ExitCode);

            string[] lines = result.StdOut.Split('\n', StringSplitOptions.RemoveEmptyEntries);

            foreach (string line in lines)
            {
                if (line.Contains(name))
                {
                    // Find the first GUID in the output
                    int left = line.IndexOf('{');
                    int right = line.IndexOfAny(new char[] { '}', '…' });
                    Assert.AreNotEqual(-1, left);
                    Assert.AreNotEqual(-1, right);
                    Assert.LessOrEqual(right - left, 38);

                    return line.Substring(left, right - left);
                }
            }

            return string.Empty;
        }

        /// <summary>
        /// Copy the installer file to the ARP InstallSource directory.
        /// </summary>
        /// <param name="installerFilePath">Test installer to be copied.</param>
        /// <param name="productCode">Installer Product.</param>
        /// <param name="useWoW6432Node">is WoW6432Node to use.</param>
        /// <returns>Returns the installer source directory if the file operation is successful, otherwise returns an empty string.</returns>
        public static string CopyInstallerFileToARPInstallSourceDirectory(string installerFilePath, string productCode, bool useWoW6432Node = false)
        {
            if (string.IsNullOrEmpty(installerFilePath))
            {
                new ArgumentNullException(nameof(installerFilePath));
            }

            if (!File.Exists(installerFilePath))
            {
                new FileNotFoundException(installerFilePath);
            }

            string outputDirectory = string.Empty;

            // Define the registry paths for both x64 and x86
            string registryPath = useWoW6432Node
                ? $@"SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{productCode}"
                : $@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{productCode}";

            // Open the registry key where the uninstall information is stored
            using (RegistryKey key = Registry.LocalMachine.OpenSubKey(registryPath))
            {
                if (key != null)
                {
                    // Read the InstallSource value
                    string arpInstallSourceDirectory = key.GetValue("InstallSource") as string;

                    if (!string.IsNullOrEmpty(arpInstallSourceDirectory))
                    {
                        // Copy the MSI installer to the InstallSource directory
                        string installerFileName = Path.GetFileName(installerFilePath);
                        string installerDestinationPath = Path.Combine(arpInstallSourceDirectory, installerFileName);

                        if (!Directory.Exists(arpInstallSourceDirectory))
                        {
                            Directory.CreateDirectory(arpInstallSourceDirectory);
                        }

                        File.Copy(installerFilePath, installerDestinationPath, true);

                        outputDirectory = arpInstallSourceDirectory;
                    }
                }
            }

            return outputDirectory;
        }

        /// <summary>
        /// Run winget command via direct process.
        /// </summary>
        /// <param name="command">Command to run.</param>
        /// <param name="parameters">Parameters.</param>
        /// <param name="stdIn">Optional std in.</param>
        /// <param name="timeOut">Optional timeout.</param>
        /// <param name="throwOnTimeout">Throw on timeout.</param>
        /// <returns>The result of the command.</returns>
        private static RunCommandResult RunAICLICommandViaDirectProcess(string command, string parameters, string stdIn, int timeOut, bool throwOnTimeout)
        {
            RunCommandResult result = new ();
            Process p = new Process();
            p.StartInfo = new ProcessStartInfo(TestSetup.Parameters.AICLIPath, command + ' ' + parameters);
            p.StartInfo.UseShellExecute = false;

            p.StartInfo.StandardOutputEncoding = Encoding.UTF8;
            p.StartInfo.RedirectStandardOutput = true;
            StringBuilder outputData = new ();
            p.OutputDataReceived += (sender, args) =>
            {
                if (args.Data != null)
                {
                    outputData.AppendLine(args.Data);
                }
            };

            p.StartInfo.StandardErrorEncoding = Encoding.UTF8;
            p.StartInfo.RedirectStandardError = true;
            StringBuilder errorData = new ();
            p.ErrorDataReceived += (sender, args) =>
            {
                if (args.Data != null)
                {
                    errorData.AppendLine(args.Data);
                }
            };

            if (!string.IsNullOrEmpty(stdIn))
            {
                p.StartInfo.RedirectStandardInput = true;
            }

            p.Start();
            p.BeginOutputReadLine();
            p.BeginErrorReadLine();

            if (!string.IsNullOrEmpty(stdIn))
            {
                p.StandardInput.Write(stdIn);
                p.StandardInput.Close();
            }

            if (p.WaitForExit(timeOut))
            {
                // According to documentation, this extra call will ensure that the redirected streams
                // have finished reading all of the data.
                p.WaitForExit();

                result.ExitCode = p.ExitCode;
                result.StdOut = outputData.ToString();
                result.StdErr = errorData.ToString();

                TestContext.Out.WriteLine("Command run completed with exit code: " + result.ExitCode);

                if (!string.IsNullOrEmpty(result.StdErr))
                {
                    TestContext.Error.WriteLine("Command run error. Error: " + result.StdErr);
                }

                if (TestSetup.Parameters.VerboseLogging)
                {
                    TestContext.Out.WriteLine("Command run output. Output:\n" + result.StdOut ?? "<null>");
                }
            }
            else if (throwOnTimeout)
            {
                throw new TimeoutException($"Direct winget command run timed out: {command} {parameters}");
            }

            return result;
        }

        /// <summary>
        /// Run command result.
        /// </summary>
        public struct RunCommandResult
        {
            /// <summary>
            /// Exit code.
            /// </summary>
            public int ExitCode;

            /// <summary>
            /// StdOut.
            /// </summary>
            public string StdOut;

            /// <summary>
            /// StdErr.
            /// </summary>
            public string StdErr;
        }
    }
}
